| Geyser | 1977-03-15 |
|---|---|
| Beehive | 0940 |
| Beehive's Indicator | 0927 ie |
| Castle | 1555 ie |
| Grand | 1652 ie |
| Old Faithful | 0912 short, 1009 long, 1129 long, 1232 ie long, 1348 long, 1459 short, 1551 long, 1719 long |
| Values for Old Faithful Area | 1977-03-15 |
|---|---|
| Astronomical Twilight Begin | 04:57 |
| Nautical Twilight Begin | 05:32 |
| Civil Twilight Begin | 06:06 |
| Sunrise | 06:35 |
| Sunset | 18:29 |
| Civil Twilight End | 18:58 |
| Nautical Twilight End | 19:32 |
| Astronomical Twilight End | 20:06 |
| Moon Illumination | 20.7% |